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Fabric Release Notes | Version 6.5

February 2nd, 2026 by Kushal Gambhir

Summary

This release introduces improved UIStream redirect traceability, enhanced Phone Tenure Advance intelligence for stronger risk assessment, and major CKYC performance and scalability upgrades, delivering better reliability, observability, and throughput for client integrations.

I. Enhanced UIStream Redirect URL

The UIstream redirect behavior has been enhanced to improve reliability and debug ability for client integrations.
For all redirect scenarios, the redirect URL will now always include the following additional query parameters: initial_transaction_id, response_key.

These parameters will be appended alongside existing fields (such as status and message, where applicable).

Backward Compatibility

  • The merchant-defined redirect URL remains unchanged.
  • All existing query parameters are preserved as-is.The change is additive only and does not modify or remove any existing fields.

Benefit
This ensures clients can reliably track, process, and debug UIstream flows, even in cases of delayed callbacks or expired JWT tokens.

II. Phone Tenure Advance- Enhancement

Endpoint: POST /v2/bytes/alternate-data/phone-tenure-advance

Description & Use Case
The Phone Tenure Advance API now provides an exclusive Truecaller-based phone intelligence offering, enabling better fraud checks, risk assessment, and customer profiling using mobile tenure, activity, and spam signals.

Key Highlights

  • Optional name-based enrichment.
  • Configurable exposure of detailed day-wise activity scores.
  • No breaking changes for existing clients.

For Response coverage refer to the Product Documentation and API Reference.

III. CKYC Enhancements (Self Hosted Product)

The updated image tag includes DB Enhancements and Optimisations.

  • Improved bulk processing performance with faster data retrieval and higher system throughput.
  • Enhanced system scalability, supporting up to 6× increased processing capacity.

Action for Merchants

  • Take backup of the DB as their is migration involved before the image is pulled.
  • Add "alembic upgrade head " in the docker compose command.
  • We recommend pulling and deploying the latest image tag: 3.0.1.8.3